Yeah, I think this could be applied to a bunch of different services. Twitter was just the one that made me think of it. Flickr however if I favorite a photo I want that to show up in my stream like it does now though also add a "like" to the person who originally posted the photo if they're on FF.
- David Recordon

OpenLike or OpenFav is what you are talking about? :) Or maybe it's more a kind of ActivitySync between platforms, who have activities with the same meaning and are able to identify also the same assets by an URL
- Sebastian Küpers

Sure, but could just start with FF implementing this feature. :)
- David Recordon